. >> the iranians are being continuing to amass technologies, learning how to enrich uranium, stockpiling low enriched uranium and it's getting to a level in which particularly one of iran's major rivals in the region, israel, is sounding the alarm bells and saying that the iranians are getting too close. >> graeme lawson, a great historian of the cuban missile crisis said that the iran nuclear issue is the cuban missile crisis in slow motion. (instrumental music) >> and north korea continues to make itself heard, regularly testing nuclear missiles despite international condemnation. >> it's estimated that the next time north korea tests a nuclear weapon it could be by highly enriched uranium, whereas the last two were believed to be through the plutonium route. so this is very problematic, not just because north korea having lots of fissile material is a bad thing, but north korea has a tradition of selling off anything that can garner hard currency on the open market. >> and though the soviet empire is a thing of the past, china is echoing the aspirations of its predecessor. >> there's